A NULL pointer dereference occurs in Roy Marples NetworkConfiguration/dhcpcd 10.3.0 while parsing configuration options. In parse_option() (src/if-options.c:1886), the code performs a member access on a NULL pointer of type 'struct dhcp_opt' when an unexpected/invalid option token or parsing state causes the lookup to yield NULL. The instrumented fuzzing build reports 'runtime error: member access within null pointer of type struct dhcp_opt' and aborts.

The remote Debian 11 host has a package installed that is affected by multiple vulnerabilities as referenced in the dla-4686 advisory.

    - -------------------------------------------------------------------------     Debian LTS Advisory DLA-4686-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                   Martin-ric Racine     July 15, 2026                                 https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : dhcpcd5     Version        : 7.1.0-2+deb11u1     CVE ID         : CVE-2025-70102 CVE-2026-56114     Debian Bug     : 1140767

    Two vulnerabilities were discovered in dhcpcd5, a DHCP client, which     may result in denial of service and possibly data corruption.

    For Debian 11 bullseye, these problems have been fixed in version     7.1.0-2+deb11u1.

    We recommend that you upgrade your dhcpcd5 packages.

    For the detailed security status of dhcpcd5 please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/dhcpcd5

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote openSUSE 16 host has a package installed that is affected by a vulnerability as referenced in the openSUSE- SU-2026:21220-1 advisory.

    This update for dhcpcd fixes the following issue

    Update to 10.3.2:

    - CVE-2025-70102: NULL pointer dereference in `parse_option()` when processing a specially crafted     configuration input       (bsc#1268761).

    Changes for dhcpcd:

     * options: Ensure ldop is not NULL dereferenced
     * DHCP: Don't run double EXPIRE hooks on carrier loss
     * DHCP: free the state when dropping on state NONE
     * BSD: don't send uninitialised memory using      ps_root_indirectioctl
     * Fix fallback_time option
     * IPv4: Ignore DHCP state when building routes
     * route: Routes may not have an interface assinged
     * options: Ensure that an overly long bitflag string does not      crash
     * options: Don't assume vsio options have an argument
     * common: Cast via uintptr_t rather than unsigned long in UNCONST
     * privsep: Ensure we recv for real after a successful recv      MSG_PEEK
     * DHCP: Add parentheses to macro definitions
     * ipv6nd: empty IPV6RA_EXPIRE eloop queue when dropping
     * privsep: enforce message boundaries with MSG_EOR on our      messages
     * Protocols will notify when dhcpcd can exit
     * DHCP: Don't request T1 and T2
     * DHCP: Don't request a lease time
     * DHCP6: Don't exit if using DHCP4 INFORM in non manager mode
     * ND: Route Information Option prefix is optional
     * ipv6: respect slaac hwaddr to really use the hwaddr
     * When stopping all interfaces at exit and releasing,      remove persistance
     * NetBSD: Delete RTF_CONNECTED route when changing it
     * privsep: Drain the log when the root process is exiting
     * eloop: vastly reworked, kqueue and epoll support on by default

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - A NULL pointer dereference occurs in Roy Marples NetworkConfiguration/dhcpcd 10.3.0 while parsing     configuration options. In parse_option() (src/if-options.c:1886), the code performs a member access on a     NULL pointer of type 'struct dhcp_opt' when an unexpected/invalid option token or parsing state causes the     lookup to yield NULL. The instrumented fuzzing build reports 'runtime error: member access within null     pointer of type struct dhcp_opt' and aborts. (CVE-2025-70102)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Severity
327108	Debian dla-4686 : dhcpcd5 - security update	Nessus	Debian Local Security Checks	medium
325044	openSUSE 16 Security Update : dhcpcd (openSUSE-SU-2026:21220-1)	Nessus	SuSE Local Security Checks	medium
321823	Linux Distros Unpatched Vulnerability : CVE-2025-70102	Nessus	Misc.	medium

Detections

Analytics

CVE-2025-70102

medium

Tenable Plugins

medium

medium

medium